diff options
Diffstat (limited to 'src/rrdset.c')
| -rw-r--r-- | src/rrdset.c | 1310 |
1 files changed, 1310 insertions, 0 deletions
diff --git a/src/rrdset.c b/src/rrdset.c new file mode 100644 index 000000000..c847b9690 --- /dev/null +++ b/src/rrdset.c @@ -0,0 +1,1310 @@ +#define NETDATA_RRD_INTERNALS 1 +#include "common.h" + +#define RRD_DEFAULT_GAP_INTERPOLATIONS 1 + +void __rrdset_check_rdlock(RRDSET *st, const char *file, const char *function, const unsigned long line) { + debug(D_RRD_CALLS, "Checking read lock on chart '%s'", st->id); + + int ret = netdata_rwlock_trywrlock(&st->rrdset_rwlock); + if(ret == 0) + fatal("RRDSET '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", st->id, function, line, file); +} + +void __rrdset_check_wrlock(RRDSET *st, const char *file, const char *function, const unsigned long line) { + debug(D_RRD_CALLS, "Checking write lock on chart '%s'", st->id); + + int ret = netdata_rwlock_tryrdlock(&st->rrdset_rwlock); + if(ret == 0) + fatal("RRDSET '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", st->id, function, line, file); +} + + +// ---------------------------------------------------------------------------- +// RRDSET index + +int rrdset_compare(void* a, void* b) { + if(((RRDSET *)a)->hash < ((RRDSET *)b)->hash) return -1; + else if(((RRDSET *)a)->hash > ((RRDSET *)b)->hash) return 1; + else return strcmp(((RRDSET *)a)->id, ((RRDSET *)b)->id); +} + +static RRDSET *rrdset_index_find(RRDHOST *host, const char *id, uint32_t hash) { + RRDSET tmp; + strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX); + tmp.hash = (hash)?hash:simple_hash(tmp.id); + + return (RRDSET *)avl_search_lock(&(host->rrdset_root_index), (avl *) &tmp); +} + +// ---------------------------------------------------------------------------- +// RRDSET name index + +#define rrdset_from_avlname(avlname_ptr) ((RRDSET *)((avlname_ptr) - offsetof(RRDSET, avlname))) + +int rrdset_compare_name(void* a, void* b) { + RRDSET *A = rrdset_from_avlname(a); + RRDSET *B = rrdset_from_avlname(b); + + // fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name); + + if(A->hash_name < B->hash_name) return -1; + else if(A->hash_name > B->hash_name) return 1; + else return strcmp(A->name, B->name); +} + +RRDSET *rrdset_index_add_name(RRDHOST *host, RRDSET *st) { + void *result; + // fprintf(stderr, "ADDING: %s (name: %s)\n", st->id, st->name); + result = avl_insert_lock(&host->rrdset_root_index_name, (avl *) (&st->avlname)); + if(result) return rrdset_from_avlname(result); + return NULL; +} + +RRDSET *rrdset_index_del_name(RRDHOST *host, RRDSET *st) { + void *result; + // fprintf(stderr, "DELETING: %s (name: %s)\n", st->id, st->name); + result = (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index_name), (avl *)(&st->avlname)); + if(result) return rrdset_from_avlname(result); + return NULL; +} + + +// ---------------------------------------------------------------------------- +// RRDSET - find charts + +static inline RRDSET *rrdset_index_find_name(RRDHOST *host, const char *name, uint32_t hash) { + void *result = NULL; + RRDSET tmp; + tmp.name = name; + tmp.hash_name = (hash)?hash:simple_hash(tmp.name); + + // fprintf(stderr, "SEARCHING: %s\n", name); + result = avl_search_lock(&host->rrdset_root_index_name, (avl *) (&(tmp.avlname))); + if(result) { + RRDSET *st = rrdset_from_avlname(result); + if(strcmp(st->magic, RRDSET_MAGIC)) + error("Search for RRDSET %s returned an invalid RRDSET %s (name %s)", name, st->id, st->name); + + // fprintf(stderr, "FOUND: %s\n", name); + return rrdset_from_avlname(result); + } + // fprintf(stderr, "NOT FOUND: %s\n", name); + return NULL; +} + +inline RRDSET *rrdset_find(RRDHOST *host, const char *id) { + debug(D_RRD_CALLS, "rrdset_find() for chart '%s' in host '%s'", id, host->hostname); + RRDSET *st = rrdset_index_find(host, id, 0); + return(st); +} + +inline RRDSET *rrdset_find_bytype(RRDHOST *host, const char *type, const char *id) { + debug(D_RRD_CALLS, "rrdset_find_bytype() for chart '%s.%s' in host '%s'", type, id, host->hostname); + + char buf[RRD_ID_LENGTH_MAX + 1]; + strncpyz(buf, type, RRD_ID_LENGTH_MAX - 1); + strcat(buf, "."); + int len = (int) strlen(buf); + strncpyz(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len)); + + return(rrdset_find(host, buf)); +} + +inline RRDSET *rrdset_find_byname(RRDHOST *host, const char *name) { + debug(D_RRD_CALLS, "rrdset_find_byname() for chart '%s' in host '%s'", name, host->hostname); + RRDSET *st = rrdset_index_find_name(host, name, 0); + return(st); +} + +// ---------------------------------------------------------------------------- +// RRDSET - rename charts + +char *rrdset_strncpyz_name(char *to, const char *from, size_t length) { + char c, *p = to; + + while (length-- && (c = *from++)) { + if(c != '.' && !isalnum(c)) + c = '_'; + + *p++ = c; + } + + *p = '\0'; + + return to; +} + +void rrdset_set_name(RRDSET *st, const char *name) { + if(unlikely(st->name && !strcmp(st->name, name))) + return; + + debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", st->name, name); + + char b[CONFIG_MAX_VALUE + 1]; + char n[RRD_ID_LENGTH_MAX + 1]; + + snprintfz(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name); + rrdset_strncpyz_name(b, n, CONFIG_MAX_VALUE); + + if(st->name) { + rrdset_index_del_name(st->rrdhost, st); + st->name = config_set_default(st->config_section, "name", b); + st->hash_name = simple_hash(st->name); + rrdsetvar_rename_all(st); + } + else { + st->name = config_get(st->config_section, "name", b); + st->hash_name = simple_hash(st->name); + } + + rrdset_wrlock(st); + RRDDIM *rd; + rrddim_foreach_write(rd, st) + rrddimvar_rename_all(rd); + rrdset_unlock(st); + + if(unlikely(rrdset_index_add_name(st->rrdhost, st) != st)) + error("RRDSET: INTERNAL ERROR: attempted to index duplicate chart name '%s'", st->name); +} + + +// ---------------------------------------------------------------------------- +// RRDSET - reset a chart + +void rrdset_reset(RRDSET *st) { + debug(D_RRD_CALLS, "rrdset_reset() %s", st->name); + + st->last_collected_time.tv_sec = 0; + st->last_collected_time.tv_usec = 0; + st->last_updated.tv_sec = 0; + st->last_updated.tv_usec = 0; + st->current_entry = 0; + st->counter = 0; + st->counter_done = 0; + + RRDDIM *rd; + rrddim_foreach_read(rd, st) { + rd->last_collected_time.tv_sec = 0; + rd->last_collected_time.tv_usec = 0; + rd->collections_counter = 0; + memset(rd->values, 0, rd->entries * sizeof(storage_number)); + } +} + +// ---------------------------------------------------------------------------- +// RRDSET - helpers for rrdset_create() + +inline long align_entries_to_pagesize(RRD_MEMORY_MODE mode, long entries) { + if(unlikely(entries < 5)) entries = 5; + if(unlikely(entries > RRD_HISTORY_ENTRIES_MAX)) entries = RRD_HISTORY_ENTRIES_MAX; + + if(unlikely(mode == RRD_MEMORY_MODE_NONE || mode == RRD_MEMORY_MODE_RAM)) + return entries; + + long page = (size_t)sysconf(_SC_PAGESIZE); + long size = sizeof(RRDDIM) + entries * sizeof(storage_number); + if(unlikely(size % page)) { + size -= (size % page); + size += page; + + long n = (size - sizeof(RRDDIM)) / sizeof(storage_number); + return n; + } + + return entries; +} + +static inline void last_collected_time_align(struct timeval *tv, int update_every) { + tv->tv_sec -= tv->tv_sec % update_every; + tv->tv_usec = 500000; +} + +static inline void last_updated_time_align(struct timeval *tv, int update_every) { + tv->tv_sec -= tv->tv_sec % update_every; + tv->tv_usec = 0; +} + +// ---------------------------------------------------------------------------- +// RRDSET - free a chart + +void rrdset_free(RRDSET *st) { + if(unlikely(!st)) return; + + rrdhost_check_wrlock(st->rrdhost); // make sure we have a write lock on the host + rrdset_wrlock(st); // lock this RRDSET + + // info("Removing chart '%s' ('%s')", st->id, st->name); + + // ------------------------------------------------------------------------ + // remove it from the indexes + + if(unlikely(rrdset_index_del(st->rrdhost, st) != st)) + error("RRDSET: INTERNAL ERROR: attempt to remove from index chart '%s', removed a different chart.", st->id); + + rrdset_index_del_name(st->rrdhost, st); + + // ------------------------------------------------------------------------ + // free its children structures + + while(st->variables) rrdsetvar_free(st->variables); + while(st->alarms) rrdsetcalc_unlink(st->alarms); + while(st->dimensions) rrddim_free(st, st->dimensions); + + rrdfamily_free(st->rrdhost, st->rrdfamily); + + // ------------------------------------------------------------------------ + // unlink it from the host + + if(st == st->rrdhost->rrdset_root) { + st->rrdhost->rrdset_root = st->next; + } + else { + // find the previous one + RRDSET *s; + for(s = st->rrdhost->rrdset_root; s && s->next != st ; s = s->next) ; + + // bypass it + if(s) s->next = st->next; + else error("Request to free RRDSET '%s': cannot find it under host '%s'", st->id, st->rrdhost->hostname); + } + + rrdset_unlock(st); + + // ------------------------------------------------------------------------ + // free it + + netdata_rwlock_destroy(&st->rrdset_rwlock); + + // free directly allocated members + freez(st->config_section); + + if(st->rrd_memory_mode == RRD_MEMORY_MODE_SAVE || st->rrd_memory_mode == RRD_MEMORY_MODE_MAP) { + debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name); + munmap(st, st->memsize); + } + else + freez(st); +} + +void rrdset_save(RRDSET *st) { + RRDDIM *rd; + + rrdset_check_rdlock(st); + + // info("Saving chart '%s' ('%s')", st->id, st->name); + + if(st->rrd_memory_mode == RRD_MEMORY_MODE_SAVE) { + debug(D_RRD_STATS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename); + savememory(st->cache_filename, st, st->memsize); + } + + rrddim_foreach_read(rd, st) { + if(likely(rd->rrd_memory_mode == RRD_MEMORY_MODE_SAVE)) { + debug(D_RRD_STATS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename); + savememory(rd->cache_filename, rd, rd->memsize); + } + } +} + +void rrdset_delete(RRDSET *st) { + RRDDIM *rd; + + rrdset_check_rdlock(st); + + // info("Deleting chart '%s' ('%s')", st->id, st->name); + + if(st->rrd_memory_mode == RRD_MEMORY_MODE_SAVE) { + debug(D_RRD_STATS, "Deleting stats '%s' to '%s'.", st->name, st->cache_filename); + unlink(st->cache_filename); + } + + rrddim_foreach_read(rd, st) { + if(likely(rd->rrd_memory_mode == RRD_MEMORY_MODE_SAVE)) { + debug(D_RRD_STATS, "Deleting dimension '%s' to '%s'.", rd->name, rd->cache_filename); + unlink(rd->cache_filename); + } + } +} + +// ---------------------------------------------------------------------------- +// RRDSET - create a chart + +static inline RRDSET *rrdset_find_on_create(RRDHOST *host, const char *fullid) { + RRDSET *st = rrdset_find(host, fullid); + if(unlikely(st)) { + rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE); + debug(D_RRD_CALLS, "RRDSET '%s', already exists.", fullid); + return st; + } + + return NULL; +} + +RRDSET *rrdset_create( + RRDHOST *host + , const char *type + , const char *id + , const char *name + , const char *family + , const char *context + , const char *title + , const char *units + , long priority + , int update_every + , RRDSET_TYPE chart_type +) { + if(!type || !type[0]) { + fatal("Cannot create rrd stats without a type."); + return NULL; + } + + if(!id || !id[0]) { + fatal("Cannot create rrd stats without an id."); + return NULL; + } + + // ------------------------------------------------------------------------ + // check if it already exists + + char fullid[RRD_ID_LENGTH_MAX + 1]; + snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id); + + RRDSET *st = rrdset_find_on_create(host, fullid); + if(st) return st; + + rrdhost_wrlock(host); + + st = rrdset_find_on_create(host, fullid); + if(st) { + rrdhost_unlock(host); + return st; + } + + char fullfilename[FILENAME_MAX + 1]; + + // ------------------------------------------------------------------------ + // compose the config_section for this chart + + char config_section[RRD_ID_LENGTH_MAX + 1]; + if(host == localhost) + strcpy(config_section, fullid); + else + snprintfz(config_section, RRD_ID_LENGTH_MAX, "%s/%s", host->machine_guid, fullid); + + // ------------------------------------------------------------------------ + // get the options from the config, we need to create it + + long rentries = config_get_number(config_section, "history", host->rrd_history_entries); + long entries = align_entries_to_pagesize(host->rrd_memory_mode, rentries); + if(entries != rentries) entries = config_set_number(config_section, "history", entries); + + if(host->rrd_memory_mode == RRD_MEMORY_MODE_NONE && entries != rentries) + entries = config_set_number(config_section, "history", 10); + + int enabled = config_get_boolean(config_section, "enabled", 1); + if(!enabled) entries = 5; + + unsigned long size = sizeof(RRDSET); + char *cache_dir = rrdset_cache_dir(host, fullid, config_section); + + time_t now = now_realtime_sec(); + + // ------------------------------------------------------------------------ + // load it or allocate it + + debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id); + + snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir); + if(host->rrd_memory_mode == RRD_MEMORY_MODE_SAVE || host->rrd_memory_mode == RRD_MEMORY_MODE_MAP) { + st = (RRDSET *) mymmap(fullfilename, size, ((host->rrd_memory_mode == RRD_MEMORY_MODE_MAP) ? MAP_SHARED : MAP_PRIVATE), 0); + if(st) { + memset(&st->avl, 0, sizeof(avl)); + memset(&st->avlname, 0, sizeof(avl)); + memset(&st->variables_root_index, 0, sizeof(avl_tree_lock)); + memset(&st->dimensions_index, 0, sizeof(avl_tree_lock)); + memset(&st->rrdset_rwlock, 0, sizeof(netdata_rwlock_t)); + + st->name = NULL; + st->type = NULL; + st->family = NULL; + st->context = NULL; + st->title = NULL; + st->units = NULL; + st->dimensions = NULL; + st->next = NULL; + st->variables = NULL; + st->alarms = NULL; + st->flags = 0x00000000; + + if(strcmp(st->magic, RRDSET_MAGIC) != 0) { + errno = 0; + info("Initializing file %s.", fullfilename); + memset(st, 0, size); + } + else if(strcmp(st->id, fullid) != 0) { + errno = 0; + error("File %s contents are not for chart %s. Clearing it.", fullfilename, fullid); + // munmap(st, size); + // st = NULL; + memset(st, 0, size); + } + else if(st->memsize != size || st->entries != entries) { + errno = 0; + error("File %s does not have the desired size. Clearing it.", fullfilename); + memset(st, 0, size); + } + else if(st->update_every != update_every) { + errno = 0; + error("File %s does not have the desired update frequency. Clearing it.", fullfilename); + memset(st, 0, size); + } + else if((now - st->last_updated.tv_sec) > update_every * entries) { + errno = 0; + error("File %s is too old. Clearing it.", fullfilename); + memset(st, 0, size); + } + else if(st->last_updated.tv_sec > now + update_every) { + errno = 0; + error("File %s refers to the future. Clearing it.", fullfilename); + memset(st, 0, size); + } + + // make sure the database is aligned + if(st->last_updated.tv_sec) + last_updated_time_align(&st->last_updated, update_every); + + + // make sure we have the right memory mode + // even if we cleared the memory + st->rrd_memory_mode = host->rrd_memory_mode; + } + } + + if(unlikely(!st)) { + st = callocz(1, size); + st->rrd_memory_mode = (host->rrd_memory_mode == RRD_MEMORY_MODE_NONE) ? RRD_MEMORY_MODE_NONE : RRD_MEMORY_MODE_RAM; + } + + st->config_section = strdup(config_section); + st->rrdhost = host; + st->memsize = size; + st->entries = entries; + st->update_every = update_every; + + if(st->current_entry >= st->entries) st->current_entry = 0; + + strcpy(st->cache_filename, fullfilename); + strcpy(st->magic, RRDSET_MAGIC); + + strcpy(st->id, fullid); + st->hash = simple_hash(st->id); + + st->cache_dir = cache_dir; + + st->chart_type = rrdset_type_id(config_get(st->config_section, "chart type", rrdset_type_name(chart_type))); + st->type = config_get(st->config_section, "type", type); + st->family = config_get(st->config_section, "family", family?family:st->type); + st->units = config_get(st->config_section, "units", units?units:""); + + st->context = config_get(st->config_section, "context", context?context:st->id); + st->hash_context = simple_hash(st->context); + + st->priority = config_get_number(st->config_section, "priority", priority); + if(enabled) + rrdset_flag_set(st, RRDSET_FLAG_ENABLED); + else + rrdset_flag_clear(st, RRDSET_FLAG_ENABLED); + + rrdset_flag_clear(st, RRDSET_FLAG_DETAIL); + rrdset_flag_clear(st, RRDSET_FLAG_DEBUG); + rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE); + + // if(!strcmp(st->id, "disk_util.dm-0")) { + // st->debug = 1; + // error("enabled debugging for '%s'", st->id); + // } + // else error("not enabled debugging for '%s'", st->id); + + st->green = NAN; + st->red = NAN; + + st->last_collected_time.tv_sec = 0; + st->last_collected_time.tv_usec = 0; + st->counter_done = 0; + + st->gap_when_lost_iterations_above = (int) ( + config_get_number(st->config_section, "gap when lost iterations above", RRD_DEFAULT_GAP_INTERPOLATIONS) + 2); + + avl_init_lock(&st->dimensions_index, rrddim_compare); + avl_init_lock(&st->variables_root_index, rrdvar_compare); + + netdata_rwlock_init(&st->rrdset_rwlock); + + if(name && *name) rrdset_set_name(st, name); + else rrdset_set_name(st, id); + + { + char varvalue[CONFIG_MAX_VALUE + 1]; + char varvalue2[CONFIG_MAX_VALUE + 1]; + snprintfz(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name); + json_escape_string(varvalue2, varvalue, sizeof(varvalue2)); + st->title = config_get(st->config_section, "title", varvalue2); + } + + st->rrdfamily = rrdfamily_create(host, st->family); + + st->next = host->rrdset_root; + host->rrdset_root = st; + + if(host->health_enabled) { + rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, 0); + rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, 0); + rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, 0); + rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, 0); + rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, 0); + } + + if(unlikely(rrdset_index_add(host, st) != st)) + error("RRDSET: INTERNAL ERROR: attempt to index duplicate chart '%s'", st->id); + + rrdsetcalc_link_matching(st); + rrdcalctemplate_link_matching(st); + + rrdhost_cleanup_obsolete(host); + + rrdhost_unlock(host); + + return(st); +} + + +// ---------------------------------------------------------------------------- +// RRDSET - data collection iteration control + +inline void rrdset_next_usec_unfiltered(RRDSET *st, usec_t microseconds) { + + if(unlikely(!st->last_collected_time.tv_sec)) { + // the first entry + microseconds = st->update_every * USEC_PER_SEC; + } + else if(unlikely(!microseconds)) { + // no dt given by the plugin + struct timeval now; + now_realtime_timeval(&now); + microseconds = dt_usec(&now, &st->last_collected_time); + } + + st->usec_since_last_update = microseconds; +} + +inline void rrdset_next_usec(RRDSET *st, usec_t microseconds) { + struct timeval now; + now_realtime_timeval(&now); + + if(unlikely(!st->last_collected_time.tv_sec)) { + // the first entry + microseconds = st->update_every * USEC_PER_SEC; + } + else if(unlikely(!microseconds)) { + // no dt given by the plugin + microseconds = dt_usec(&now, &st->last_collected_time); + } + else { + // microseconds has the time since the last collection +//#ifdef NETDATA_INTERNAL_CHECKS +// usec_t now_usec = timeval_usec(&now); +// usec_t last_usec = timeval_usec(&st->last_collected_time); +//#endif + susec_t since_last_usec = dt_usec_signed(&now, &st->last_collected_time); + + if(unlikely(since_last_usec < 0)) { + // oops! the database is in the future + error("Database for chart '%s' on host '%s' is %lld microseconds in the future. Adjusting it to current time.", st->id, st->rrdhost->hostname, -since_last_usec); + + st->last_collected_time.tv_sec = now.tv_sec - st->update_every; + st->last_collected_time.tv_usec = now.tv_usec; + last_collected_time_align(&st->last_collected_time, st->update_every); + + st->last_updated.tv_sec = now.tv_sec - st->update_every; + st->last_updated.tv_usec = now.tv_usec; + last_updated_time_align(&st->last_updated, st->update_every); + + microseconds = st->update_every * USEC_PER_SEC; + since_last_usec = st->update_every * USEC_PER_SEC; + } + + // verify the microseconds given is good + if(unlikely(microseconds > (usec_t)since_last_usec)) { + debug(D_RRD_CALLS, "dt %llu usec given is too big - it leads %llu usec to the future, for chart '%s' (%s).", microseconds, microseconds - (usec_t)since_last_usec, st->name, st->id); + +//#ifdef NETDATA_INTERNAL_CHECKS +// if(unlikely(last_usec + microseconds > now_usec + 1000)) +// error("dt %llu usec given is too big - it leads %llu usec to the future, for chart '%s' (%s).", microseconds, microseconds - (usec_t)since_last_usec, st->name, st->id); +//#endif + + microseconds = (usec_t)since_last_usec; + } + else if(unlikely(microseconds < (usec_t)since_last_usec * 0.8)) { + debug(D_RRD_CALLS, "dt %llu usec given is too small - expected %llu usec up to -20%%, for chart '%s' (%s).", microseconds, (usec_t)since_last_usec, st->name, st->id); + +//#ifdef NETDATA_INTERNAL_CHECKS +// error("dt %llu usec given is too small - expected %llu usec up to -20%%, for chart '%s' (%s).", microseconds, (usec_t)since_last_usec, st->name, st->id); +//#endif + microseconds = (usec_t)since_last_usec; + } + } + debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds); + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: NEXT: %llu microseconds", st->name, microseconds); + + st->usec_since_last_update = microseconds; +} + + +// ---------------------------------------------------------------------------- +// RRDSET - process the collected values for all dimensions of a chart + +static inline void rrdset_init_last_collected_time(RRDSET *st) { + now_realtime_timeval(&st->last_collected_time); + last_collected_time_align(&st->last_collected_time, st->update_every); +} + +static inline usec_t rrdset_update_last_collected_time(RRDSET *st) { + usec_t last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec; + usec_t ut = last_collect_ut + st->usec_since_last_update; + st->last_collected_time.tv_sec = (time_t) (ut / USEC_PER_SEC); + st->last_collected_time.tv_usec = (suseconds_t) (ut % USEC_PER_SEC); + return last_collect_ut; +} + +static inline void rrdset_init_last_updated_time(RRDSET *st) { + // copy the last collected time to last updated time + st->last_updated.tv_sec = st->last_collected_time.tv_sec; + st->last_updated.tv_usec = st->last_collected_time.tv_usec; + last_updated_time_align(&st->last_updated, st->update_every); +} + +static inline void rrdset_done_push_exclusive(RRDSET *st) { + if(unlikely(!st->last_collected_time.tv_sec)) { + // it is the first entry + // set the last_collected_time to now + rrdset_init_last_collected_time(st); + } + else { + // it is not the first entry + // calculate the proper last_collected_time, using usec_since_last_update + rrdset_update_last_collected_time(st); + } + + st->counter_done++; + + rrdset_rdlock(st); + rrdset_done_push(st); + rrdset_unlock(st); +} + +void rrdset_done(RRDSET *st) { + if(unlikely(netdata_exit)) return; + + if(unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_NONE)) { + if(unlikely(st->rrdhost->rrdpush_enabled)) + rrdset_done_push_exclusive(st); + + return; + } + + debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name); + + RRDDIM *rd; + + int + pthreadoldcancelstate; // store the old cancelable pthread state, to restore it at the end + + char + store_this_entry = 1, // boolean: 1 = store this entry, 0 = don't store this entry + first_entry = 0; // boolean: 1 = this is the first entry seen for this chart, 0 = all other entries + + unsigned int + stored_entries = 0; // the number of entries we have stored in the db, during this call to rrdset_done() + + usec_t + last_collect_ut, // the timestamp in microseconds, of the last collected value + now_collect_ut, // the timestamp in microseconds, of this collected value (this is NOW) + last_stored_ut, // the timestamp in microseconds, of the last stored entry in the db + next_store_ut, // the timestamp in microseconds, of the next entry to store in the db + update_every_ut = st->update_every * USEC_PER_SEC; // st->update_every in microseconds + + if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &pthreadoldcancelstate) != 0)) + error("Cannot set pthread cancel state to DISABLE."); + + // a read lock is OK here + rrdset_rdlock(st); + +/* + // enable the chart, if it was disabled + if(unlikely(rrd_delete_unupdated_dimensions) && !st->enabled) + st->enabled = 1; +*/ + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE))) { + error("Chart '%s' has the OBSOLETE flag set, but it is collected.", st->id); + rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE); + } + + // check if the chart has a long time to be updated + if(unlikely(st->usec_since_last_update > st->entries * update_every_ut)) { + info("%s: took too long to be updated (%0.3Lf secs). Resetting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0)); + rrdset_reset(st); + st->usec_since_last_update = update_every_ut; + first_entry = 1; + } + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: microseconds since last update: %llu", st->name, st->usec_since_last_update); + + // set last_collected_time + if(unlikely(!st->last_collected_time.tv_sec)) { + // it is the first entry + // set the last_collected_time to now + rrdset_init_last_collected_time(st); + + last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - update_every_ut; + + // the first entry should not be stored + store_this_entry = 0; + first_entry = 1; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: has not set last_collected_time. Setting it now. Will not store the next entry.", st->name); + } + else { + // it is not the first entry + // calculate the proper last_collected_time, using usec_since_last_update + last_collect_ut = rrdset_update_last_collected_time(st); + } + + // if this set has not been updated in the past + // we fake the last_update time to be = now - usec_since_last_update + if(unlikely(!st->last_updated.tv_sec)) { + // it has never been updated before + // set a fake last_updated, in the past using usec_since_last_update + rrdset_init_last_updated_time(st); + + // the first entry should not be stored + store_this_entry = 0; + first_entry = 1; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: initializing last_updated to last_collected_time - %llu microseconds. Will not store the next entry.", st->name, st->usec_since_last_update); + } + + // check if we will re-write the entire data set + if(unlikely(dt_usec(&st->last_collected_time, &st->last_updated) > st->entries * update_every_ut)) { + info("%s: too old data (last updated at %ld.%ld, last collected at %ld.%ld). Resetting it. Will not store the next entry.", st->name, st->last_updated.tv_sec, st->last_updated.tv_usec, st->last_collected_time.tv_sec, st->last_collected_time.tv_usec); + rrdset_reset(st); + rrdset_init_last_updated_time(st); + + st->usec_since_last_update = update_every_ut; + + // the first entry should not be stored + store_this_entry = 0; + first_entry = 1; + } + + // these are the 3 variables that will help us in interpolation + // last_stored_ut = the last time we added a value to the storage + // now_collect_ut = the time the current value has been collected + // next_store_ut = the time of the next interpolation point + last_stored_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec; + now_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec; + next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) { + debug(D_RRD_STATS, "%s: last_collect_ut = %0.3Lf (last collection time)", st->name, (long double)last_collect_ut/1000000.0); + debug(D_RRD_STATS, "%s: now_collect_ut = %0.3Lf (current collection time)", st->name, (long double)now_collect_ut/1000000.0); + debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0); + debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0); + } + + if(unlikely(!st->counter_done)) { + store_this_entry = 0; + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: Will not store the next entry.", st->name); + } + st->counter_done++; + + if(unlikely(st->rrdhost->rrdpush_enabled)) + rrdset_done_push(st); + + // calculate totals and count the dimensions + int dimensions = 0; + st->collected_total = 0; + rrddim_foreach_read(rd, st) { + dimensions++; + if(likely(rd->updated)) + st->collected_total += rd->collected_value; + } + + uint32_t storage_flags = SN_EXISTS; + + // process all dimensions to calculate their values + // based on the collected figures only + // at this stage we do not interpolate anything + rrddim_foreach_read(rd, st) { + + if(unlikely(!rd->updated)) { + rd->calculated_value = 0; + continue; + } + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: START " + " last_collected_value = " COLLECTED_NUMBER_FORMAT + " collected_value = " COLLECTED_NUMBER_FORMAT + " last_calculated_value = " CALCULATED_NUMBER_FORMAT + " calculated_value = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->last_collected_value + , rd->collected_value + , rd->last_calculated_value + , rd->calculated_value + ); + + switch(rd->algorithm) { + case RRD_ALGORITHM_ABSOLUTE: + rd->calculated_value = (calculated_number)rd->collected_value + * (calculated_number)rd->multiplier + / (calculated_number)rd->divisor; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC ABS/ABS-NO-IN " + CALCULATED_NUMBER_FORMAT " = " + COLLECTED_NUMBER_FORMAT + " * " CALCULATED_NUMBER_FORMAT + " / " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->calculated_value + , rd->collected_value + , (calculated_number)rd->multiplier + , (calculated_number)rd->divisor + ); + break; + + case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL: + if(unlikely(!st->collected_total)) + rd->calculated_value = 0; + else + // the percentage of the current value + // over the total of all dimensions + rd->calculated_value = + (calculated_number)100 + * (calculated_number)rd->collected_value + / (calculated_number)st->collected_total; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC PCENT-ROW " + CALCULATED_NUMBER_FORMAT " = 100" + " * " COLLECTED_NUMBER_FORMAT + " / " COLLECTED_NUMBER_FORMAT + , st->id, rd->name + , rd->calculated_value + , rd->collected_value + , st->collected_total + ); + break; + + case RRD_ALGORITHM_INCREMENTAL: + if(unlikely(rd->collections_counter <= 1)) { + rd->calculated_value = 0; + continue; + } + + // if the new is smaller than the old (an overflow, or reset), set the old equal to the new + // to reset the calculation (it will give zero as the calculation for this second) + if(unlikely(rd->last_collected_value > rd->collected_value)) { + debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT + , st->name, rd->name + , rd->last_collected_value + , rd->collected_value); + + if(!(rrddim_flag_check(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS))) + storage_flags = SN_EXISTS_RESET; + + rd->last_collected_value = rd->collected_value; + } + + rd->calculated_value += + (calculated_number)(rd->collected_value - rd->last_collected_value) + * (calculated_number)rd->multiplier + / (calculated_number)rd->divisor; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC INC PRE " + CALCULATED_NUMBER_FORMAT " = (" + COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT + ")" + " * " CALCULATED_NUMBER_FORMAT + " / " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->calculated_value + , rd->collected_value, rd->last_collected_value + , (calculated_number)rd->multiplier + , (calculated_number)rd->divisor + ); + break; + + case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL: + if(unlikely(rd->collections_counter <= 1)) { + rd->calculated_value = 0; + continue; + } + + // if the new is smaller than the old (an overflow, or reset), set the old equal to the new + // to reset the calculation (it will give zero as the calculation for this second) + if(unlikely(rd->last_collected_value > rd->collected_value)) { + debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT + , st->name, rd->name + , rd->last_collected_value + , rd->collected_value); + + if(!(rrddim_flag_check(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS))) + storage_flags = SN_EXISTS_RESET; + + rd->last_collected_value = rd->collected_value; + } + + // the percentage of the current increment + // over the increment of all dimensions together + if(unlikely(st->collected_total == st->last_collected_total)) + rd->calculated_value = 0; + else + rd->calculated_value = + (calculated_number)100 + * (calculated_number)(rd->collected_value - rd->last_collected_value) + / (calculated_number)(st->collected_total - st->last_collected_total); + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC PCENT-DIFF " + CALCULATED_NUMBER_FORMAT " = 100" + " * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")" + " / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")" + , st->id, rd->name + , rd->calculated_value + , rd->collected_value, rd->last_collected_value + , st->collected_total, st->last_collected_total + ); + break; + + default: + // make the default zero, to make sure + // it gets noticed when we add new types + rd->calculated_value = 0; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC " + CALCULATED_NUMBER_FORMAT " = 0" + , st->id, rd->name + , rd->calculated_value + ); + break; + } + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: PHASE2 " + " last_collected_value = " COLLECTED_NUMBER_FORMAT + " collected_value = " COLLECTED_NUMBER_FORMAT + " last_calculated_value = " CALCULATED_NUMBER_FORMAT + " calculated_value = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->last_collected_value + , rd->collected_value + , rd->last_calculated_value + , rd->calculated_value + ); + + } + + // at this point we have all the calculated values ready + // it is now time to interpolate values on a second boundary + + if(unlikely(now_collect_ut < next_store_ut)) { + // this is collected in the same interpolation point + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name); + +//#ifdef NETDATA_INTERNAL_CHECKS +// info("%s is collected in the same interpolation point: short by %llu microseconds", st->name, next_store_ut - now_collect_ut); +//#endif + } + + usec_t first_ut = last_stored_ut; + long long iterations = (now_collect_ut - last_stored_ut) / (update_every_ut); + if((now_collect_ut % (update_every_ut)) == 0) iterations++; + + for( ; next_store_ut <= now_collect_ut ; last_collect_ut = next_store_ut, next_store_ut += update_every_ut, iterations-- ) { +//#ifdef NETDATA_INTERNAL_CHECKS +// if(iterations < 0) { error("%s: iterations calculation wrapped! first_ut = %llu, last_stored_ut = %llu, next_store_ut = %llu, now_collect_ut = %llu", st->name, first_ut, last_stored_ut, next_store_ut, now_collect_ut); } +//#endif + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) { + debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0); + debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0); + } + + st->last_updated.tv_sec = (time_t) (next_store_ut / USEC_PER_SEC); + st->last_updated.tv_usec = 0; + + rrddim_foreach_read(rd, st) { + calculated_number new_value; + + switch(rd->algorithm) { + case RRD_ALGORITHM_INCREMENTAL: + new_value = (calculated_number) + ( rd->calculated_value + * (calculated_number)(next_store_ut - last_collect_ut) + / (calculated_number)(now_collect_ut - last_collect_ut) + ); + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC2 INC " + CALCULATED_NUMBER_FORMAT " = " + CALCULATED_NUMBER_FORMAT + " * %llu" + " / %llu" + , st->id, rd->name + , new_value + , rd->calculated_value + , (next_store_ut - last_stored_ut) + , (now_collect_ut - last_stored_ut) + ); + + rd->calculated_value -= new_value; + new_value += rd->last_calculated_value; + rd->last_calculated_value = 0; + new_value /= (calculated_number)st->update_every; + + if(unlikely(next_store_ut - last_stored_ut < update_every_ut)) { + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: COLLECTION POINT IS SHORT " CALCULATED_NUMBER_FORMAT " - EXTRAPOLATING", + st->id, rd->name + , (calculated_number)(next_store_ut - last_stored_ut) + ); + new_value = new_value * (calculated_number)(st->update_every * 1000000) / (calculated_number)(next_store_ut - last_stored_ut); + } + break; + + case RRD_ALGORITHM_ABSOLUTE: + case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL: + case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL: + default: + if(iterations == 1) { + // this is the last iteration + // do not interpolate + // just show the calculated value + + new_value = rd->calculated_value; + } + else { + // we have missed an update + // interpolate in the middle values + + new_value = (calculated_number) + ( ( (rd->calculated_value - rd->last_calculated_value) + * (calculated_number)(next_store_ut - last_collect_ut) + / (calculated_number)(now_collect_ut - last_collect_ut) + ) + + rd->last_calculated_value + ); + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: CALC2 DEF " + CALCULATED_NUMBER_FORMAT " = (((" + "(" CALCULATED_NUMBER_FORMAT " - " CALCULATED_NUMBER_FORMAT ")" + " * %llu" + " / %llu) + " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , new_value + , rd->calculated_value, rd->last_calculated_value + , (next_store_ut - first_ut) + , (now_collect_ut - first_ut), rd->last_calculated_value + ); + } + break; + } + + if(unlikely(!store_this_entry)) { + rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS); + continue; + } + + if(likely(rd->updated && rd->collections_counter > 1 && iterations < st->gap_when_lost_iterations_above)) { + rd->values[st->current_entry] = pack_storage_number(new_value, storage_flags ); + rd->last_stored_value = new_value; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: STORE[%ld] " + CALCULATED_NUMBER_FORMAT " = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , st->current_entry + , unpack_storage_number(rd->values[st->current_entry]), new_value + ); + } + else { + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: STORE[%ld] = NON EXISTING " + , st->id, rd->name + , st->current_entry + ); + rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS); + rd->last_stored_value = NAN; + } + + stored_entries++; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) { + calculated_number t1 = new_value * (calculated_number)rd->multiplier / (calculated_number)rd->divisor; + calculated_number t2 = unpack_storage_number(rd->values[st->current_entry]); + calculated_number accuracy = accuracy_loss(t1, t2); + debug(D_RRD_STATS, "%s/%s: UNPACK[%ld] = " CALCULATED_NUMBER_FORMAT " FLAGS=0x%08x (original = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s)" + , st->id, rd->name + , st->current_entry + , t2 + , get_storage_number_flags(rd->values[st->current_entry]) + , t1 + , accuracy + , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : "" + ); + + rd->collected_volume += t1; + rd->stored_volume += t2; + accuracy = accuracy_loss(rd->collected_volume, rd->stored_volume); + debug(D_RRD_STATS, "%s/%s: VOLUME[%ld] = " CALCULATED_NUMBER_FORMAT ", calculated = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s" + , st->id, rd->name + , st->current_entry + , rd->stored_volume + , rd->collected_volume + , accuracy + , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : "" + ); + + } + } + // reset the storage flags for the next point, if any; + storage_flags = SN_EXISTS; + + st->counter++; + st->current_entry = ((st->current_entry + 1) >= st->entries) ? 0 : st->current_entry + 1; + last_stored_ut = next_store_ut; + } + + st->last_collected_total = st->collected_total; + + rrddim_foreach_read(rd, st) { + if(unlikely(!rd->updated)) + continue; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: setting last_collected_value (old: " COLLECTED_NUMBER_FORMAT ") to last_collected_value (new: " COLLECTED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_collected_value, rd->collected_value); + + rd->last_collected_value = rd->collected_value; + + switch(rd->algorithm) { + case RRD_ALGORITHM_INCREMENTAL: + if(unlikely(!first_entry)) { + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value + rd->calculated_value, rd->calculated_value); + rd->last_calculated_value += rd->calculated_value; + } + else { + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s: THIS IS THE FIRST POINT", st->name); + } + break; + + case RRD_ALGORITHM_ABSOLUTE: + case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL: + case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL: + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value, rd->calculated_value); + rd->last_calculated_value = rd->calculated_value; + break; + } + + rd->calculated_value = 0; + rd->collected_value = 0; + rd->updated = 0; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) + debug(D_RRD_STATS, "%s/%s: END " + " last_collected_value = " COLLECTED_NUMBER_FORMAT + " collected_value = " COLLECTED_NUMBER_FORMAT + " last_calculated_value = " CALCULATED_NUMBER_FORMAT + " calculated_value = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->last_collected_value + , rd->collected_value + , rd->last_calculated_value + , rd->calculated_value + ); + } + + // ALL DONE ABOUT THE DATA UPDATE + // -------------------------------------------------------------------- + +/* + // find if there are any obsolete dimensions (not updated recently) + if(unlikely(rrd_delete_unupdated_dimensions)) { + + for( rd = st->dimensions; likely(rd) ; rd = rd->next ) + if((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec) + break; + + if(unlikely(rd)) { + RRDDIM *last; + // there is dimension to free + // upgrade our read lock to a write lock + rrdset_unlock(st); + rrdset_wrlock(st); + + for( rd = st->dimensions, last = NULL ; likely(rd) ; ) { + // remove it only it is not updated in rrd_delete_unupdated_dimensions seconds + + if(unlikely((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)) { + info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id); + + if(unlikely(!last)) { + st->dimensions = rd->next; + rd->next = NULL; + rrddim_free(st, rd); + rd = st->dimensions; + continue; + } + else { + last->next = rd->next; + rd->next = NULL; + rrddim_free(st, rd); + rd = last->next; + continue; + } + } + + last = rd; + rd = rd->next; + } + + if(unlikely(!st->dimensions)) { + info("Disabling chart %s (%s) since it does not have any dimensions", st->name, st->id); + st->enabled = 0; + } + } + } +*/ + + rrdset_unlock(st); + + if(unlikely(pthread_setcancelstate(pthreadoldcancelstate, NULL) != 0)) + error("Cannot set pthread cancel state to RESTORE (%d).", pthreadoldcancelstate); +} |